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Scientific Notation
Word Problems
Solving for x
Order of Operations
LCM or GCF
100
Write 62,000 in scientific notation
What is 6.2x10^4
100
The Nile River is the world's longest river. Let N stand for the length in miles of the Nile. The Amazon River is 4,000 miles long. Write an expression to show how much longer the Nile is than the Amazon
What is N-4,000
100
81=17+x
What is x=64
100
9+12x2
What is 33
100
Find the GCF of 12,18, and 60
What is 6
200
Write 50,400,000 in scientific notation
What is 5.04x10^7
200
The Libary of Congress, in Washington D.C., is the largest library in the world. It was founded in 1800 and has 24,616,867 books. Round the number of books to the nearest hundred thousand, and write that number in scientific notation.
What is 2.46x10^7
200
x-56=19
What is x=75
200
4x3^2+8-16
What is 28
200
Find the LCM of 12, 10, and 15
What is 60
300
Write 6.954x10^6 in standard form
What is 6,954,000
300
Sasha's book report is about animals in Madagascar. She writes 10 pages, which represents 1/3 of her report, about lemurs. How many more pages does Sasha have to write to complete her book report.
What is 30 pages
300
12x=132
What is x=11
300
8/(1+3)x5^2-2
What is 48
300
Find the LCM of 8 and 12
What is 24
400
Write 112,050
What is 1.1205x10^5
400
A bat can eat half its weight in insects in one night. If a bat weighing 3/4 lb eats half its weight in insects, how much do the insects weigh?
What is 3/8 lbs
400
x/7=23
What is x=161
400
62-4x(15/5)
What is x=50
400
The local recreation center held a scavenger hunt. There were 15 boys and 9 girls at the event. The group was divided into the greatest number of teams possible with the same number of boys on each team and the same number of girls on each team. How many teams were made if each person was on a team?
What is 3 teams
500
Write 8.1164x10^8
What is 811,640,000
500
Mariko sold an old ook to a used bookstore. She had hoped to sell it for $0.80, but the store gave her 3/4 of a dollar. What is the difference between the 2 amounts
What is $.05
500
3x-5=28
What is x=11
500
(2x4)^2-3x(5+3)
What is 40
500
Pencils are sold in packs of 12, and erasers in packs of 9. Mr. Joplin wants to give each of 36 students a pencil and an eraser. What is the least number of packs he should buy so there are none left over.
Mr. Joplin should buy 3 packs of pencils and 4 packs of erasers